Check if a large number is divisible by 25 or not | C # program to find if a number is divisible by 25 or not ; Function to find that number divisible by 25 or not . ; If length of string is single digit then then it 's not divisible by 25 ; Driver Code
using System ; class IsDivisible { static bool isDivisibleBy25 ( String str ) { int n = str . Length ; if ( n == 1 ) return false ; return ( ( str [ n - 1 ] - '0' == 0 && str [ n - 2 ] - '0' == 0 ) || ( ( str [ n - 2 ] - '0' ) * 10 + ( str [ n - 1 ] - '0' ) ) % 25 == 0 ) ; } public static void Main ( ) { String str = "76955" ; if ( isDivisibleBy25 ( str ) ) Console . Write ( " Yes " ) ; else Console . Write ( " No " ) ; } }